<?php

/** 
* 数据库连接类,对数据操作
* 
* 完成数据库的操作。 
* @author      m17269@163.com
* @version     1.0
* @since       1.0 
*/  

/** 
* 数据库连接
*  
* @author         m17269@163.com
* @since          1.0 
*/ 
class Tools {
 
    /**
     * 设置状态码
     */
    public static function setHttpHeaders(int $statusCode,string $contentType='text/json' ){
        
        $statusMessage = Tools::getHttpStatusMessage($statusCode);
        
        header("HTTP/1.1 ". $statusCode ." ". $statusMessage);        
        header("Content-Type:". $contentType);
        return json_encode($statusMessage);
    }

    /**
     * 返回状态码
     */
    public static function getHttpStatusMessage(int $statusCode){
        $httpStatus = array(
            100 => 'Continue',  
            101 => 'Switching Protocols',  
            200 => 'OK',
            201 => 'Created',  
            202 => 'Accepted',  
            203 => 'Non-Authoritative Information',  
            204 => 'No Content',  
            205 => 'Reset Content',  
            206 => 'Partial Content',  
            300 => 'Multiple Choices',  
            301 => 'Moved Permanently',  
            302 => 'Found',  
            303 => 'See Other',  
            304 => 'Not Modified',  
            305 => 'Use Proxy',  
            306 => '(Unused)',  
            307 => 'Temporary Redirect',  
            400 => 'Bad Request',  
            401 => 'Unauthorized',  
            402 => 'Payment Required',  
            403 => 'Forbidden',  
            404 => 'Not Found',  
            405 => 'Method Not Allowed',  
            406 => 'Not Acceptable',  
            407 => 'Proxy Authentication Required',  
            408 => 'Request Timeout',  
            409 => 'Conflict',  
            410 => 'Gone',  
            411 => 'Length Required',  
            412 => 'Precondition Failed',  
            413 => 'Request Entity Too Large',  
            414 => 'Request-URI Too Long',  
            415 => 'Unsupported Media Type',  
            416 => 'Requested Range Not Satisfiable',  
            417 => 'Expectation Failed',  
            500 => 'Internal Server Error',  
            501 => 'Not Implemented',  
            502 => 'Bad Gateway',  
            503 => 'Service Unavailable',  
            504 => 'Gateway Timeout',  
            505 => 'HTTP Version Not Supported');
        return ($httpStatus[$statusCode]) ? $httpStatus[$statusCode] : $httpStatus[500];
    }
    
    /**
     * 返回JSON数据
     * @param int Code 填写要返回的状态码
     * @param string Msg 返回的信息提示
     * @param array Data 不填写返回数据默认返回空数组
     * @return String 返回一串JSON格式的字符串 
     */
    public static function returnToJson(int $Code,string $Msg,array $Data=array()) : string{
        return json_encode(
            array(
                'Code'=>$Code,
                'Msg'=>$Msg,
                'Data'=>$Data
            )
        );
    }


}